Steam-generator.



No. 853,290- P ATENTED MAY 14, 1907.

E. L. J. WBRA'.

STEAM GENERATOR. APPLICATION rum) 213 5, 1907.

' '2 SHEETS-SHEET 2.

THE uonms pzrtss 60-, WASHINGTON, 0. c4

EUGENE LAMBERT JOSEPH WERA, OF LIEGE, BELGIUM.

STEAM-GENERATOR.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed February 5, 1907. Serial No. 355,85 7.

To all, whom it may concern.-

Be it known that I, EUGENE LAMBERT J OSEPH l/VERA, a subject of the King of Belgium, residing in Liege, Rue de Ftinne No. 120, in the Kingdom of Belgium, have invented certain new and useful Improve ments in SteamGenerators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked therein, which form a part of this specification.

This invention relates to an arrangement enabling a system of boiler having U shaped tubes to be used with impure waters.

It consists essentially in utilizing the current of water in a determined direction obtained by the employment of U shaped tubes having arms of unequal length and unequally heated to cause a part of the water in circulation to pass through a deflecting decanter arranged in the interior of the boiler. This decanter is most advantageously placed at the outlet of the longer arms and receives the water leaving a part of these arms previously mixed with the feed water.

The accompanying drawings represent two forms of carrying this arrangement into effect.

Figure 1 is a longitudinal section of a boiler of this system with one reservoir. Fig. 2 is a section drawn on the line C D of Fig. 1. Fig. 3 is a section drawn on the line A B of Fig. 1. Fig. 4 is a transverse section of a boiler of this system with two reservoirs. Fig. 5 is a horizontal section drawn on the line E F of Fig. 4. Fig. 6 is a longitudinal section drawn on the line I J of Fig. 4. Fig. 7 is a section drawn on the line H L of Fig. 4.

The boiler with one reservoir represented at Figs. 1, 2 and 3, comprises a reservoir 1, provided with U shaped tubes, one arm 2, of which is longer than the other, 3. These U shaped tubes are inclosed in gas flues, 4 and 5, arranged in such manner that the arms 2 are more highly heated than the arms 3. The upper part of the greater number of these tubes 2 rises slightly above the normal level of the water in the reservoir 1, as represented I at One or several of these tubes 2, as

represented at 7, rises or rise to a horizontal trough 8. These tubes 7 thus bring a part I of the water ,put in circulation in the boiler to I one of the ends of the said trough 8, which receives at the same place the feed water delivl ered by the tube 9. This hot water mixed with the feed water flows along the said trough 8 and is delivered into a deflecting decanter 10, within which are deposited the cali careous sediments which are precipitated by I the combined action of products introduced into the boiler and by the heating of this water in the trough 8. i At the outlet from the decanter 10 the water passes into the reservoir 1 and thence enters, deprived of its incrusting salts, into the U shaped tubes.

The arrangements represented at Figs. 4, 5, 6 and 7, diifer from the arrangement above described by the employment of two reservoirs 11 and 12 communicating by means of unions 13- and 14. In this case the short tubes 25 are connected to the reservoir 11, and the long tubes to the other reservoir 12. The trough 15 receiving the feed water from the tube 16, is provided at the opposite end with a partition 17 insulating a part of the long tubes 18 from the others 16. The circulation water coming from the tubes 18 mixes with the feed water already heated by its passage along the trough 15 and passes to the decanter 19 through the union 18. On its leaving the decanter the purified water is distributed to the short arms by a perforated tube 20 in communication with the decanter. The part of the circulation water not coming from the tubes 18, that is to say, that coming from the long ordinary tubes 16, passes from the reservoir 12 to the reservoir 11 through the union 14.

Claims. 1. A steam generator comprising a boiler, U shaped tubes having their ends connected I with said boiler, the arms of said U shaped tubes being of unequal length, a deflecting I decanter and means for carrying feed water and the water issuing from the longer arms the tubes to said decanter. 2. A steam generator comprising a boiler, U shaped tubes connected with the boiler and having their arms of unequal length and the disincrusting unequally heated, a deflecting decanter from In testimony that I claim the foregoing as which the Water passes to the shorter arms my invention, have signed my name in of the tubes, a trough in the steam chamber presence of two subscribing Witnesses.

connected With the longer arms of the tubes EUGENE LAMBERT JOSEPH WERA. for receiving the water issuing therefrom Witnesses: and delivering it to the decanter and means HENRI RAoLoT,

for delivering feed Water to said trough. GEORGES VANDER HAUPTEN. 

